A278576 E.g.f. = exp(5*(exp(t)-1) + 3*(exp(t)-1)^2).

1, 5, 36, 313, 3145, 35500, 441951, 5989413, 87496610, 1367284215, 22714400561, 399122562838, 7386136082045, 143434180479665, 2913717863731996, 61746352166762613, 1361745345400563725, 31186806216360128300, 740294632899931980131, 18182298488225724570513

Offset: 0

Author

N. J. A. Sloane, Nov 28 2016

Keywords

• nonn

Links

• Jocelyn Quaintance, Letter Representations of m x n x p Proper Arrays (2004), arXiv:math/0412244. See Theorem 5.1, but note that the e.g.f. given there is incorrect.
• Jocelyn Quaintance, Word Representations of m x n x p Proper Arrays, (2004), arXiv:math/0412280; Discrete Mathematics, Volume 309, Issue 6, 6 April 2009, Pages 1199-1212. See last line of text on page 1212 of the Discrete Math. version of the paper.

Crossrefs

Cf. A129872-A129886.

Programs

Mathematica

With[{nn=20},CoefficientList[Series[Exp[5*(Exp[x]-1)+3(Exp[x]-1)^2],{x,0,nn}],x] Range[ 0,nn]!] (* Harvey P. Dale, Jul 23 2024 *)