A265083 Column 3 of array in A265080.

0, 3, 12, 51, 192, 675, 2358, 8043, 26736, 88659, 290910, 941985, 3046068, 9791613, 31221414, 99466515, 315677664, 996398883, 3143147598, 9888728505, 30988353300, 97066250379, 303448558578, 945804661377, 2946961001304, 9168357598425, 28456994858058, 88302639334743

Offset

0,2

Links

Andrew Howroyd, Table of n, a(n) for n = 0..500

D. R. L. Brown, Bounds on surmising remixed keys, IACR, Report 2015/375, 2015-2016. See Table 1.

Formula

E.g.f.: Sum_{j>=0} (exp(x)^3 - (Sum_{i=0..j} x^i/i!)^3). - Andrew Howroyd, Aug 09 2025

Prog

(PARI) seq(n)={Vec(serlaplace(sum(j=0, n, exp(3*x + O(x*x^n)) - sum(i=0, j, x^i/i!, O(x*x^n))^3)), -n-1)} \\ Andrew Howroyd, Aug 09 2025

Crossrefs

Cf. A265080.

Sequence in context: A094601 A242155 A009024 * A043291 A135343 A381209

Adjacent sequences: A265080 A265081 A265082 * A265084 A265085 A265086

Keyword

nonn

Author

N. J. A. Sloane, Jan 01 2016

Extensions

a(6) onwards from Andrew Howroyd, Aug 09 2025

Status

approved