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URL: https://oeis.org/A345357

⇱ A345357 - OEIS

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A345357
Numbers m > 4 such that [m-2..m+2] belong to A327261.
5
5, 717, 2637, 14157, 89037, 112077, 149517, 156957, 180477, 235917, 255357, 267837, 269997, 293037, 399357, 447837, 533517, 592557, 679677, 703917, 770157, 909837, 929997, 1043997, 1158237, 1257597, 1283037, 1296477, 1333197, 1369197, 1500237, 1971357, 1998717, 2062557, 2099997
OFFSET
1,1
COMMENTS
Terms > 5 have 7 for their units digit. This is because the units digit of A327261 terms can't be 0 or 3 (row 3 of A327259 has all numbers that end in 0 or 3) and there are at most 2 consecutive even terms (see comment for A327263).
LINKS
PROG
(PARI) T319929(n, k) = if (n%2, if (k%2, n+k-1, k), if (k%2, n, 0));
T(n, k) = 2*n*k - T319929(n, k); \\ A327259
list(nn) = {my(list = List()); for (n=2, nn, for (k=2, nn\n, listput(list, T(n, k)); ); ); setminus([1..nn], Set(list)); } \\ A327261
lista(nn) = {my(v=Vec(list(nn))); for (m=5, #v-1, my(x=v[m]); if (vecsearch(v, x-2) && vecsearch(v, x-1) && vecsearch(v, x+1) && vecsearch(v, x+2), print1(x, ", ")); ); }
CROSSREFS
KEYWORD
nonn
AUTHOR
David Lovler, Jun 15 2021
STATUS
approved