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 A272439 Sum of positive divisors of A000032(n). 1
 3, 1, 4, 7, 8, 12, 39, 30, 48, 140, 168, 200, 576, 522, 1128, 2688, 2208, 3572, 12960, 9350, 17296, 44520, 54208, 64680, 158976, 186048, 361928, 809200, 826728, 1169400, 4131036, 3010350, 4876416, 13862800, 17256768, 23639040, 59720832, 54018522, 116538408, 251395200, 233917632, 370248452, 1319232096 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Amiram Eldar, Table of n, a(n) for n = 0..1000 (using Blair Kelly's data) Blair Kelly, Fibonacci and Lucas Factorizations FORMULA a(n) = A000203(A000032(n)). EXAMPLE a(2) = 4 because A000032(2) = 3 and A000203(3) = 4. MATHEMATICA DivisorSigma[1, LucasL@ Range[0, 42]] (* Michael De Vlieger, Apr 29 2016 *) PROG (PARI) a(n) = sigma(fibonacci(n-1) + fibonacci(n+1)); CROSSREFS Cf. A000032, A000203. Sequence in context: A193969 A169838 A249271 * A217151 A081255 A005371 Adjacent sequences:  A272436 A272437 A272438 * A272440 A272441 A272442 KEYWORD nonn AUTHOR Altug Alkan, Apr 29 2016 STATUS approved

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Last modified December 1 08:44 EST 2021. Contains 349426 sequences. (Running on oeis4.)