a(n) is the start of the first maximal string of n consecutive primes such that the sum of squares of pairs of consecutive primes in the string is always divisible by 10.

A346215

a(n) is the start of the first maximal string of n consecutive primes such that the sum of squares of pairs of consecutive primes in the string is always divisible by 10.

Terms

    a(0) =2a(1) =53a(2) =7a(3) =17a(4) =347a(5) =373a(6) =3181a(7) =431a(8) =1511a(9) =61a(10) =2213a(11) =14551a(12) =32779a(13) =12841a(14) =23911a(15) =31121a(16) =1764349a(17) =90001a(18) =3037297a(19) =5031121a(20) =5934899a(21) =17385223a(22) =63052261a(23) =23673281a(24) =80690807a(25) =1191279451a(26) =7594193a(27) =850110593a(28) =300482639a(29) =23554787897

External references