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A070828 Sum of prime factors of Catalan numbers A000108(n), n>=2, with n=0 and n=1 terms added. 0
1, 1, 2, 5, 9, 12, 18, 27, 31, 43, 53, 58, 70, 73, 76, 99, 115, 123, 118, 148, 156, 186, 208, 212, 251, 252, 265, 309, 298, 312, 342, 395, 396, 397, 454, 472, 508, 562, 561, 570, 610, 612, 654, 663, 686, 752, 727 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

COMMENTS

a(0) := 1=: a(2) for A000108(0)= 1 = A000108(1). Sometimes a(0)= 0 =a(1) is chosen instead.

CROSSREFS

Cf. A001414 (for natural numbers), A064725 (for Fibonacci), A070827 (for Lucas).

Sequence in context: A056549 A034806 A034307 * A112988 A139405 A104862

Adjacent sequences:  A070825 A070826 A070827 * A070829 A070830 A070831

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), May 10, 2002

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Last modified February 15 03:59 EST 2012. Contains 205694 sequences.