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A324962
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a(n) is the coefficient of y^n in Product_{k=0..n} (1 + (k+2)*y + y^2), for n >= 0.
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2
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1, 5, 29, 196, 1519, 13293, 129681, 1395504, 16420458, 209724450, 2889435185, 42711906510, 674273776409, 11321518590991, 201460954569411, 3787078288117632, 74989404135333176, 1560115234974759624, 34021998346437480754, 776044059807136053020, 18479631810762197072198, 458571995526115351079650, 11839067860288617013759941, 317516454727719391340475084, 8833750915068037494754203780, 254617921422661239086243462460, 7594011177768010264119760374795
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OFFSET
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0,2
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COMMENTS
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a(n) = A324960(n+1,n) for n >= 0.
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LINKS
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Table of n, a(n) for n=0..26.
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PROG
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(PARI) {a(n) = polcoeff( prod(m=0, n, 1 + (m+2)*y + y^2 +y*O(y^n)), n, y)}
for(n=0, 30, print1(a(n), ", "))
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CROSSREFS
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Cf. A324960, A324961.
Sequence in context: A188143 A095000 A086672 * A306932 A201856 A201115
Adjacent sequences: A324959 A324960 A324961 * A324963 A324964 A324965
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KEYWORD
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nonn
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AUTHOR
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Paul D. Hanna, Mar 20 2019
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STATUS
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approved
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