A345357 Numbers m > 4 such that [m-2..m+2] belong to A327261.

5, 717, 2637, 14157, 89037, 112077, 149517, 156957, 180477, 235917, 255357, 267837, 269997, 293037, 399357, 447837, 533517, 592557, 679677, 703917, 770157, 909837, 929997, 1043997, 1158237, 1257597, 1283037, 1296477, 1333197, 1369197, 1500237, 1971357, 1998717, 2062557, 2099997

Offset: 1

Author

David Lovler, Jun 15 2021

Keywords

• nonn

Comments

Terms > 5 have 7 for their units digit. This is because the units digit of A327261 terms can't be 0 or 3 (row 3 of A327259 has all numbers that end in 0 or 3) and there are at most 2 consecutive even terms (see comment for A327263).

Links

• David Lovler, Table of n, a(n) for n = 1..58

Crossrefs

Cf. A340748, A345473, A345474.

Programs

PARI

T319929(n, k) = if (n%2, if (k%2, n+k-1, k), if (k%2, n, 0));
T(n, k) = 2*n*k - T319929(n, k); \\ A327259
list(nn) = {my(list = List()); for (n=2, nn, for (k=2, nn\n, listput(list, T(n, k)); ); ); setminus([1..nn], Set(list)); } \\ A327261
lista(nn) = {my(v=Vec(list(nn))); for (m=5, #v-1, my(x=v[m]); if (vecsearch(v, x-2) && vecsearch(v, x-1) && vecsearch(v, x+1) && vecsearch(v, x+2), print1(x, ", ")); ); }