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 A074079 Square array A(row,col) (listed in order A(0,0), A(0,1), A(1,0), A(0,2), A(1,1), A(2,0), A(0,3), etc.), giving essentially the same information as the triangle A074080 which shows only the upper triangular region. 5
 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 2, 1, 0, 0, 0, 0, 0, 0, 3, 2, 0, 0, 0, 0, 0, 0, 1, 3, 5, 1, 0, 0, 0, 0, 0, 0, 1, 3, 10, 3, 0, 0, 0, 0, 0, 0, 0, 0, 3, 17, 9, 1, 0, 0, 0, 0, 0, 0, 0, 1, 5, 28, 24, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 41, 57, 14, 1, 0, 0, 0 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,31 LINKS FORMULA A074079(n, k) = A073346(n, k)/(2^k) MAPLE A074079bi := (n, k) -> A073346bi(n, k)/(2^k); A074079 := n -> A074079bi(A025581(n), A002262(n)); A025581 := n -> binomial(1+floor((1/2)+sqrt(2*(1+n))), 2) - (n+1); A002262 := n -> n - binomial(floor((1/2)+sqrt(2*(1+n))), 2); CROSSREFS Obtained from the square array A073346 by dividing the entries on the k-th row by 2^k. Column sums: A073431. See A074080 for explanation. Cf. also A025581, A002262. Sequence in context: A095683 A219481 A298826 * A037858 A037876 A263774 Adjacent sequences:  A074076 A074077 A074078 * A074080 A074081 A074082 KEYWORD nonn,tabl AUTHOR Antti Karttunen, Aug 19 2002 STATUS approved

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Last modified October 17 12:33 EDT 2019. Contains 328112 sequences. (Running on oeis4.)