cp's OEIS Frontend

A178884 a(n) = number of 9-digit primes with digit sum n, where n runs through the non-multiples of 3 in the range [2..80].

%I A178884 #10 Mar 30 2012 16:51:57
%S A178884 0,2,26,226,372,1457,3312,9159,13320,32077,50752,102027,138554,249053,
%T A178884 331920,535444,655423,966278,1152057,1546854,1751100,2168566,2374001,
%U A178884 2719026,2850784,3029814,3063907,3019100,2943918,2691740,2519884,2134422,1930862,1511648,1303187,935353,783315,514221,402227,238252,182466,97415,66012,30140,21162,8438,4350,1311,906,170,65,3,1
%N A178884 a(n) = number of 9-digit primes with digit sum n, where n runs through the non-multiples of 3 in the range [2..80].
%H A178884 BigPrimes.net, <a href="http://www.bigprimes.net/sum-of-digits/">Digit sums of primes</a>
%e A178884 Digit-sums of 9-digit primes
%e A178884 Sum     count
%e A178884 2       0
%e A178884 4       2
%e A178884 5       26
%e A178884 7       226
%e A178884 8       372
%e A178884 10      1457
%e A178884 11      3312
%e A178884 13      9159
%e A178884 14      13320
%e A178884 16      32077
%e A178884 17      50752
%e A178884 19      102027
%e A178884 20      138554
%e A178884 22      249053
%e A178884 23      331920
%e A178884 25      535444
%e A178884 26      655423
%e A178884 28      966278
%e A178884 29      1152057
%e A178884 31      1546854
%e A178884 32      1751100
%e A178884 34      2168566
%e A178884 ...
%Y A178884 For 2- through 9-digit primes the counts are in A177868, A178183, A178447, A178571, A178605, A178876, A178879, A178884.
%K A178884 nonn,base,fini,full
%O A178884 1,2
%A A178884 _N. J. A. Sloane_, Dec 28 2010