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 A290318 Triangle read by rows. Row n gives the denominators of the coefficients of the Bernoulli polynomials of the second kind (in rising powers). 2
 1, 2, 1, 6, 1, 1, 4, 1, 2, 1, 30, 1, 1, 1, 1, 4, 1, 1, 3, 2, 1, 84, 1, 1, 1, 2, 1, 1, 24, 1, 1, 3, 4, 1, 2, 1, 90, 1, 1, 1, 1, 1, 3, 1, 1, 20, 1, 1, 1, 1, 5, 1, 1, 2, 1, 132, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS The numerators appear in A290317, where more information is found. The LCM of row n seems to be A002790(n). The first column is given by A006233. LINKS EXAMPLE The triangle T(n, k) begins: n\k     0 1 2 3 4 5 6 7 8 9 10 ... 0:      1 1:      2 1 2:      6 1 1 3:      4 1 2 1 4:     30 1 1 1 1 5:      4 1 1 3 2 1 6:     84 1 1 1 2 1 1 7:     24 1 1 3 4 1 2 1 8:     90 1 1 1 1 1 3 1 1 9:     20 1 1 1 1 5 1 1 2 1 10:   132 1 1 1 1 1 1 1 2 1  1 ... For the first rows of the rational triangle r(n, m) see A290317. CROSSREFS Cf. A002790, A006233, A290317 (numerators). Sequence in context: A196839 A295315 A089808 * A139547 A323855 A126342 Adjacent sequences:  A290315 A290316 A290317 * A290319 A290320 A290321 KEYWORD nonn,easy,frac,tabl AUTHOR Wolfdieter Lang, Aug 06 2017 EXTENSIONS Definition corrected by Eric M. Schmidt, Dec 16 2017 STATUS approved

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Last modified December 13 03:41 EST 2019. Contains 329968 sequences. (Running on oeis4.)