A104614 Write the natural numbers in base 11 in a triangle with k digits in the k-th row, as shown below. Sequence gives the leading diagonal.

1, 3, 6, 10, 1, 1, 8, 1, 2, 3, 5, 0, 4, 5, 10, 7, 7, 8, 1, 0, 1, 0, 1, 1, 2, 1, 1, 5, 1, 1, 8, 1, 1, 0, 2, 2, 3, 2, 2, 6, 2, 2, 10, 3, 3, 3, 3, 3, 8, 3, 4, 1, 4, 4, 6, 4, 4, 0, 5, 5, 6, 5, 5, 1, 6, 6, 7, 6, 7, 2, 7, 7, 8, 8, 8, 4, 8, 8, 0, 9, 9, 8, 9, 10, 4, 10, 10, 2, 1, 5, 0, 0, 0, 1, 9, 0, 1, 0, 2, 2, 7, 1

Offset: 1

Author

Robert G. Wilson v, Mar 16 2005

Keywords

• base
• nonn

Comments

1

23

456

789A

10111

213141

5161718...

Crossrefs

Cf. A104606, A104607, A104608, A104609, A104610, A104611, A104612, A104613, A091425, A104615, A104616, A104617, A104618, A104619, A104620.

Programs

Mathematica

t = Flatten[ IntegerDigits[ Range[1850], 11]]; t[[Table[n(n + 1)/2, {n, 105}]]]