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A391637

Partial sums of A094345.

0, 1, 4, 8, 14, 23, 34, 48, 66, 85, 106, 130, 156, 185, 218, 254, 294, 339, 386, 436, 490, 547, 608, 674, 744, 819, 900, 982, 1066, 1153, 1242, 1334, 1430, 1529, 1632, 1740, 1850, 1963, 2080, 2200, 2324, 2453, 2586, 2724, 2868, 3015, 3166, 3322, 3482, 3647, 3818, 3994

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OFFSET

0,3

LINKS

Table of n, a(n) for n=0..51.

FORMULA

a(n) = a(n-1) + Sum_{i=1..n} A053735(i), with a(0) = 0.

a(n) = a(n-1) + A094345(n), with a(0) = 0.

MATHEMATICA

a[n_]:=Sum[Sum[Total[IntegerDigits[i, 3]], {i, j}], {j, n}]; Array[a, 55, 0] (* Stefano Spezia, Jan 17 2026 *)

CROSSREFS

Cf. A053735, A094345.