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 A167891 A000004 preceded by 1, 4, 2. 0
 1, 4, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Inverse binomial transform of A028387. LINKS Table of n, a(n) for n=0..104. FORMULA a(0) = 1, a(1) = 4, a(2) = 2, a(n) = 0 for n > 2. G.f.: 1+4*x+2*x^2. PROG (PARI) {concat([1, 4, 2], vector(100))} CROSSREFS Cf. A000004 (zero sequence), A028387 (n+(n+1)^2), A166926 (1, 2, 4, 0, 0, 0, 0, ...), A130706 (1, 2, 0, 0, 0, 0, ...), A130779 (1, 1, 2, 0, 0, 0, 0, ...), A167858 (3, 14, 36, 36, 12, 0, 0, 0, ...), A167876 (1, 3, 4, 2, 0, 0, 0, ...). Sequence in context: A164804 A036115 A056582 * A105087 A238012 A324802 Adjacent sequences: A167888 A167889 A167890 * A167892 A167893 A167894 KEYWORD easy,nonn AUTHOR Klaus Brockhaus, Nov 14 2009 STATUS approved

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Last modified June 19 03:10 EDT 2024. Contains 373492 sequences. (Running on oeis4.)