A121973 Number of isomeric aza-benzenoids with six nitrogen atoms.

1, 10, 187, 2802, 35384, 388936, 3862098, 35475697, 306558871, 2521963738

Offset: 1

Author

Parthasarathy Nambi, Sep 05 2006

Keywords

• nonn

Examples

			If n=5 then the number of isomeric aza-benzenoids with six nitrogen atoms is 35384. Here n is the number of hexagons.
		

References

• N. Trinajstich, Z. Jericevic, J. V. Knop, W. R. Muller and K. Szymanski, "Computer generation of isomeric structures", Pure and Appl. Chem., vol. 55 (1983) pp. 379-390.