Voozh

A362132

Records in A362131.

2, 3, 4, 5, 6, 7, 9, 11, 13, 14, 17, 20, 21, 23, 29, 35, 37, 38, 44, 46, 50, 94, 100, 120, 121, 124, 125, 136, 139, 140, 142, 144, 148, 178, 185, 186, 187, 189, 193, 195, 197, 201, 203, 209

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

No more records in A362131(n) for n <= 2^28.

LINKS

Table of n, a(n) for n=1..44.

Michael De Vlieger, Plot (log_2 A362133(n), a(n)) at (x, y).

MATHEMATICA

nn = 2^20;

c[_] := False; q[_] := False; h[_] := 0; f[n_] := DivisorSigma[0, n];

a[1] = j = u = w = 1;

Reap[Do[

If[c[j],

k = j + f[u]; h[j]++; h[u]--,

k = f[j]; c[j] = True; h[j]++ ];

u = Min[u, j]; Set[{a[n], q[k], j}, {k, True, k}];

While[h[u] == 0, u++];

If[k == w, While[q[w], w++]; Sow[w]], {n, 2, nn}] ][[-1, -1]]

CROSSREFS

Cf. A360179, A362131, A362133.

Sequence in context: A180711 A363938 A032957 * A210845 A057202 A277417

Adjacent sequences: A362129 A362130 A362131 * A362133 A362134 A362135

KEYWORD

nonn,more

AUTHOR

Michael De Vlieger, Apr 10 2023

STATUS

approved

URL: https://oeis.org/A362132

⇱ A362132 - OEIS