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Search: id:A090957
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| A090957 |
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a(n)=1/(integral_{x=0 to 1}(x^4-x^5)^n dx). |
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+0
1
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| 1, 30, 495, 7280, 101745, 1381380, 18407025, 242082720, 3153092085, 40763504210, 523886186670, 6700599687600, 85360889543475, 1083790852008480, 13721016740550360, 173280964190422080, 2183615911571190525
(list; graph; listen)
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OFFSET
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0,2
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EXAMPLE
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E.g. a(3)=7280.
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PROGRAM
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(PARI) for (n = 0, 20, pol = (x^4 - x^5)^n; s = 0; for (i = 4*n, 5*n, s += polcoeff(pol, i)/(i + 1)); print(1/s)); - David Wasserman (wasserma(AT)spawar.navy.mil), Feb 22 2006
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CROSSREFS
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Cf. A002457, A090816, A090969.
Adjacent sequences: A090954 A090955 A090956 this_sequence A090958 A090959 A090960
Sequence in context: A082556 A036223 A022658 this_sequence A060560 A118681 A020926
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KEYWORD
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nonn
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AUTHOR
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Al Hakanson (hawkuu(AT)excite.com), Feb 27 2004
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EXTENSIONS
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More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Feb 22 2006
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