A064725 -id:A064725 - cp's OEIS frontend

A070827 Sum of prime factors of Lucas numbers A000032(n),n=0, n>=2, with n=1 term added.

2, 1, 3, 4, 7, 11, 8, 29, 47, 23, 44, 199, 32, 521, 284, 46, 2207, 3571, 118, 9349, 2168, 244, 353, 600, 1152, 263, 90484, 5802, 14517, 19548, 2570, 3010349, 5568, 10104, 63513, 1022, 103713, 54018521, 29134604

Offset: 0

Wolfdieter Lang, May 10 2002

a(1) := 1 for A000032(1)=1. Sometimes a(1)=0 is chosen.

Amiram Eldar, Table of n, a(n) for n = 0..1000

Cf. A000032, A001414, A064725 (for Fibonacci).

a(n) = A001414(A000032(n)) for n != 1. - Amiram Eldar, Sep 05 2019

A070828 Sum of prime factors of Catalan numbers A000108(n), n>=2, with n=0 and n=1 terms added.

Original entry on oeis.org

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

Offset: 0

Wolfdieter Lang, May 10 2002

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

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

cp's OEIS Frontend

A070827 Sum of prime factors of Lucas numbers A000032(n),n=0, n>=2, with n=1 term added.

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