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 A049426 Row sums of triangle A049410. 5
 1, 1, 4, 16, 76, 436, 2776, 19384, 148576, 1226656, 10824256, 101695936, 1010783104, 10577428096, 116166090496, 1334409569536, 15985101216256, 199216504113664, 2577292524107776, 34542575915216896, 478781761481291776 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Seiichi Manyama, Table of n, a(n) for n = 0..547 W. Lang, On generalizations of Stirling number triangles, J. Integer Seqs., Vol. 3 (2000), #00.2.4. FORMULA E.g.f.: exp((-1+(1+x)^4)/4). a(n) = n!*sum(k=1..n, sum(j=0..k, binomial(4*j,n)*(-1)^(k-j)/(4^k*(k-j)!*j!))). - Vladimir Kruchinin, Feb 07 2011 MATHEMATICA With[{nn=20}, CoefficientList[Series[Exp[((1+x)^4-1)/4], {x, 0, nn}], x] Range[ 0, nn]!] (* Harvey P. Dale, Jan 28 2017 *) CROSSREFS Sequence in context: A200725 A255906 A260949 * A057725 A196192 A159926 Adjacent sequences:  A049423 A049424 A049425 * A049427 A049428 A049429 KEYWORD easy,nonn AUTHOR STATUS approved

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Last modified April 18 07:11 EDT 2021. Contains 343072 sequences. (Running on oeis4.)