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 A153801 Index of Mersenne number A000225 that is also Mersenne prime A000668, minus n-th prime: a(n)=A000043(n)-A000040(n). 3

%I

%S 0,0,0,0,2,4,2,12,38,60,76,90,480,564,1232,2150,2222,3156,4186,4352,

%T 9616,9862,11130,19848,21604,23108,44394,86136,110394,131936,215964,

%U 756708,859296,1257648,1398120,2976070,3021220,6972430,13466750

%N Index of Mersenne number A000225 that is also Mersenne prime A000668, minus n-th prime: a(n)=A000043(n)-A000040(n).

%Y Cf. A000040, A000043, A000668, A000225, A000396, A007691, A153800, A153802, A153803.

%K nonn

%O 1,5

%A _Omar E. Pol_, Jan 13 2009

%E More terms from _R. J. Mathar_, Feb 19 2009

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Last modified December 5 18:49 EST 2019. Contains 329768 sequences. (Running on oeis4.)