Array read by upward antidiagonals: Niven (or Harshad) numbers arranged in rows by their digit sums.
Discussion
Sat Feb 28
01:15
Michel Marcus: see history discussions
Discussion
Sat Feb 28
01:11
Michel Marcus: for me A000217 does not belong here
Discussion
Fri Feb 27
09:59
Bruce Nye: The indices of the 10^n(row 1) within the sequence are A000217(n).
10:54
Michel Marcus: The indices of row 1 terms in the flattened representation are always A000217(n) because the array is displayed by antidiagonals : look at any array sequence
10:55
Michel Marcus: since the length of the antidiagonals are 1 2 4 5 6 etc
Discussion
Fri Feb 27
09:56
Michel Marcus: I don't understand
Discussion
Fri Feb 27
09:18
Michel Marcus: why A000217 ?
09:50
Bruce Nye: Indices of row 1.
