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A322768 Column 3 of array in A322765. 4
66, 249, 1075, 5133, 26683, 149410, 894124, 5683643, 38186471, 270054693, 2003233849, 15539557832, 125727364954, 1058517565329, 9254401000167, 83864649249661, 786443164853871, 7620060523287298, 76182494678422156, 784894262599538443, 8323844770001318027, 90767456208155581709 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

D. E. Knuth, The Art of Computer Programming, Vol. 4A, Table A-1, page 778.

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..500

PROG

(PARI) T(n, k) = if(k==0, sum(j=0, n, stirling(n, j, 2)), (T(n+2, k-1)+T(n+1, k-1)+sum(j=0, k-1, binomial(k-1, j)*T(n, j)))/2);

vector(20, n, T(n-1, 3)) \\ Seiichi Manyama, Nov 21 2020

CROSSREFS

Cf. A322765, A322774.

Sequence in context: A046393 A268582 A117306 * A158070 A242726 A271739

Adjacent sequences:  A322765 A322766 A322767 * A322769 A322770 A322771

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 30 2018

STATUS

approved

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Last modified August 11 20:13 EDT 2022. Contains 356067 sequences. (Running on oeis4.)