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 A221867 Let m = A153022(n); a(n) = (1 + sum_{i=1..m} prime(i)^2)/(1+m). 0
 54, 218, 222054, 669806, 155593313228, 31860927184920, 37843679840313254, 5349233671440437948, 65075392901385088766, 102744428793110424984, 251471854505406311064463, 1074272348712875302655077, 1114427338015137279788981 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..13. EXAMPLE For n=2, m=10, a(2) = 2398/11=218. CROSSREFS Cf. A007504, A045345, A171399, A050247, A050248, A024450, A111441, A217599, A217600, A122140, A223936, A223937, A024525, A153022. Sequence in context: A187299 A288626 A124007 * A248209 A245830 A102838 Adjacent sequences: A221864 A221865 A221866 * A221868 A221869 A221870 KEYWORD nonn AUTHOR Robert Price, Apr 10 2013 EXTENSIONS Definition corrected by N. J. A. Sloane, Apr 20 2013 STATUS approved

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Last modified May 31 15:57 EDT 2023. Contains 363068 sequences. (Running on oeis4.)